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Finding the Fourth Proportional to 325.24, 487.92 and 178.92

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Solution

The fourth proportional to 325.24, 487.92 and 178.92 is: 268.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.24 : 487.92 = 178.92 : x
  2. Step 2: Convert to fraction form
    325.24/487.92 = 178.92/x
  3. Step 3: Cross multiply
    325.24x = 487.92 × 178.92
  4. Step 4: Simplify right side
    325.24x = 87,298.65
  5. Step 5: Solve for x
    x = 87,298.65/325.24
  6. Step 6: Final answer
    x = 268.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.